Lock



FIG. 1 is a front perspective view of a lock in accordance with the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The lock is not limited to the scale shown herein. 

CLAIM The ornamental design of a lock, as shown and described. 